const objA = { a: 1 }["a"];

console.log(objA);

const objB = ["a"]["a"];

console.log(objB);

var a = [[1, 2], 2, 3];
console.log(a);
[0, 2, 3].map((v) => console.log(v * v));
console.log(a);

// =>
// var a = [[1,2],2,3]
// console.log(a);
// [0,2,3].map(v=> console.log(v*v))
// console.log(a)
